```json
{
    "no": ["no"],
    "yes": ["yes"]
}
```
Based on the given feature description and task, the feature "MP_TP_POST" represents the presence or absence of atrial fibrillation paroxysms at the time of admission to the intensive care unit or at a prehospital stage. In this case, the possible values for this feature are "no" and "yes".

To determine whether the patient's myocardial infarction complications data shows chronic heart failure, we need to determine if the feature "MP_TP_POST" is related to the presence or absence of chronic heart failure.

Based on the information provided, there is no direct relationship between the feature "MP_TP_POST" and the presence or absence of chronic heart failure. The feature describes a different characteristic of the patient's condition (presence or absence of atrial fibrillation paroxysms) but does not provide information specifically about chronic heart failure.

Therefore, we cannot confidently predict whether the patient's myocardial infarction complications data indicates chronic heart failure based solely on the feature "MP_TP_POST".